package com.qeng.aiwanba.download;

import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;
import android.util.Log;

class RealSystemFacade implements SystemFacade {
    private Context mContext;
    private NotificationManager mNotificationManager;
    // 2 GB
    private static final long DOWNLOAD_MAX_BYTES_OVER_MOBILE = 2 * 1024 * 1024 * 1024L;
    // 1 GB
    private static final long DOWNLOAD_RECOMMENDED_MAX_BYTES_OVER_MOBILE = 1024 * 1024 * 1024L;
    public RealSystemFacade(Context context) {
	mContext = context;
	mNotificationManager = (NotificationManager) mContext
		.getSystemService(Context.NOTIFICATION_SERVICE);
    }

    public long currentTimeMillis() {
	return System.currentTimeMillis();
    }

    public Integer getActiveNetworkType() {
	ConnectivityManager connectivity = (ConnectivityManager) mContext
		.getSystemService(Context.CONNECTIVITY_SERVICE);
	if (connectivity == null) {
	    Log.w(Constants.TAG, "couldn't get connectivity manager");
	    return null;
	}

	NetworkInfo activeInfo = connectivity.getActiveNetworkInfo();
	if (activeInfo == null) {
	    if (Constants.LOGVV) {
		Log.v(Constants.TAG, "network is not available");
	    }
	    return null;
	}
	return activeInfo.getType();
    }

    public boolean isNetworkRoaming() {
	ConnectivityManager connectivity = (ConnectivityManager) mContext
		.getSystemService(Context.CONNECTIVITY_SERVICE);
	if (connectivity == null) {
	    Log.w(Constants.TAG, "couldn't get connectivity manager");
	    return false;
	}

	NetworkInfo info = connectivity.getActiveNetworkInfo();
	boolean isMobile = (info != null && info.getType() == ConnectivityManager.TYPE_MOBILE);
	final TelephonyManager mgr = (TelephonyManager) mContext
		.getSystemService(Context.TELEPHONY_SERVICE);
	boolean isRoaming = isMobile && mgr.isNetworkRoaming();
	if (Constants.LOGVV && isRoaming) {
	    Log.v(Constants.TAG, "network is roaming");
	}
	return isRoaming;
    }

    public long getMaxBytesOverMobile() {
	return DOWNLOAD_MAX_BYTES_OVER_MOBILE;
    }

    @Override
    public long getRecommendedMaxBytesOverMobile() {
	return DOWNLOAD_RECOMMENDED_MAX_BYTES_OVER_MOBILE;
    }

    @Override
    public void sendBroadcast(Intent intent) {
	mContext.sendBroadcast(intent);
    }

    @Override
    public boolean userOwnsPackage(int uid, String packageName)
	    throws NameNotFoundException {
	return mContext.getPackageManager().getApplicationInfo(packageName, 0).uid == uid;
    }

    @Override
    public void postNotification(long id, Notification notification) {
	/**
	 * TODO: The system notification manager takes ints, not longs, as IDs,
	 * but the download manager uses IDs take straight from the database,
	 * which are longs. This will have to be dealt with at some point.
	 */
	mNotificationManager.notify((int) id, notification);
    }

    @Override
    public void cancelNotification(long id) {
	mNotificationManager.cancel((int) id);
    }

    @Override
    public void cancelAllNotifications() {
	mNotificationManager.cancelAll();
    }

    @Override
    public void startThread(Thread thread) {
	thread.start();
    }

//	@Override
//	public void startAsyncTask(AsyncTask task) {
//		task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
//	}
}
